News Abstract: in order to prevent the large deviation of the location of the water pool plugging and prevent the local water leakage, the external water leakage point and the inner water outlet point are not in the same vertical position of the pool wall.
In order to prevent the large deviation of the location of the water pool plugging and prevent the local water leakage, the external leakage point and the inner water outlet point are not in the same vertical position of the pool wall. When delineating the plugging area, it should be 1.2-2 times of the actual wet area outside the pool wall. After the position is determined according to the above method, the operator shall first clean the surface of the pool body within the scope to be treated with wire brush to make the concrete surface clean and free of dirt and loose skin, and then spray water to wet it. After the preparation work is finished, the first scraping can be carried out according to the requirements of the manual (using rubber scraper). When scraping, make sure that the 02 type plugging agent is closely combined with the concrete of the pool wall, especially when the surface of the pool is pockmarked or uneven, be patient and careful, and prevent the leakage and scraping of the pool plugging engineering. Wait one night after the first scraping, and then scrape the second layer on the second day. Each layer should be scraped at least three times. To ensure the quality. After the second layer is scraped and pressed, it should be watered overnight to keep the surface moist. After curing for 3 days, its strength can reach the use requirements.
1. The type of additive should be selected according to the main purpose of using admixture and technical and economic comparison.
2. The size of bubbles and cement particles in waterproof concrete mixed with air entraining admixture are basically the same. The aim is to cut off many capillary channels in concrete and improve impermeability. When the air content is controlled at 3% - 5%, the concrete strength decreases sharply and the impermeability decreases.
3. According to the different types of expansive concrete and expansive agent, the mixing amount range of water pool plugging admixture is specified in the specification.
4. Water cement ratio is the most weight ratio of water consumption in concrete to cement consumption. The size of water cement ratio directly affects the strength, compactness and workability of concrete.
5. The mixing quality of concrete should be strictly controlled. Mechanical mixing should be adopted for expansive concrete, which must be evenly mixed. The mixing time should not be less than 3min, which should be 30s longer than that of concrete without admixture.